Kristoff Vernard (formerly known as Kristoff von Doom and Dr. Doom) is a fictional character appearing in American comic books published by Marvel Comics. The adoptive son of Victor von Doom and biological son of Nathaniel Richards (and half-brother of Reed Richards), and direct ancestor of Kang the Conqueror/Rama-Tut/Immortus/Scarlet Centurion/Iron Lad, he has been involved mainly with the Fantastic Four, as an enemy, ally and even short-term member. From Wikipedia
